Rod descaler



Feb. 24, 1959 WIAILES ET AL ROD DESCALER ZSheet's-Sheet 2 Filed May 4.1955 I d w MY, m HQ m QRM NM wmm .p AG fim N M MDH P MM N m w H I l I ll g United States Patent ROD DES'CALER Warren Ailes, Pleasant Hills,David J. George, Bethe], and Stephen E. Tarby, Wilkinsburg, Pa.,assignors to Fnited States Steel Corporation, a corporation of New erseyThis invention relates to a device for descaling hot rolled wire rodprior to drawing.

The object of the invention is to improve on known rod-descalingapparatus by providing a device which is simpler than the latter inconstruction and less expensive to manufacture, yet equally as effectivein operation.

In a. preferred embodiment, the device comprises a base with a housingor frame including a web or wall upstanding thereon having angularlydisposed portions. Grooved bending sheaves are journaled on saidportions to provide a circuitous path of travel for wire rod trainedtherearound and drawn'through the device, so as to cause sharp bendingof the rod in different planes resulting in fragmentation and detachmentof scale remaining adherent from the hot rolling. A door is provided inone side of the housing to give access to the sheaves for threading, andthe housing is cut away at the bottom on one side to accommodate a boxfor collecting the scale detached. I

A complete understanding of the invention may be obtained from thefollowing detailed description and explanation which refer to theaccompanying drawings illustrating the present preferred embodiment. Inthe drawings:

Figure 1 is a plan view;

Figure 2 is an end elevation;

Figure 3 is a side elevation; and

Figure 4 is an elevation of the end opposite that shown in Figure 2. I

Referring now in detail to the drawings, the device of my inventioncomprises generally a base-plate and a housing or frame 11 upstandingthereon. The housing includes a wall or web 12 in the form of a platewith an end 13 and a side 14. The side is composed of an entry-sheaveportion 15 normal to the end 13 and de- Hector-sheave and exit-sheaveportions 16 and 17, respectively, forming a dihedral right angle witheach other and disposed at approximately 45 angles with portion 15. Thefree edge 17a of portion 17 is bent so as to be substantially parallelwith end 13. End 13 is cut out at 18 and portion 17 at 19 to accommodatea box 20 disposed on base-plate 10 for collecting scale particles.

End 13 and side-wall portion 15 are cut away at the top adjacent theirintersection to form a seat for a guide block 21. The block has socketstherein to accommodate guides 22 and 23 removably held in place byscrews 24. A sheave 25 is journaled on a stub shaft 26 fixed inside-wall portion 15 normal thereto so that the axis of the guides willbe substantially tangent to the sheave groove at the top thereof. Thuswire rod 27 drawn through the guides will track properly in the sheavegroove.

A second sheave 28 is journaled on a stub shaft 29 2,874,451 PatentedFeb. 24, 1959 fixed in wall portion 16, normal-thereto but at a levelbelow that of shaft 26. The construction is such that the grooves ofsheaves 25 and 28 at their adjacent sides are substantially tangent to acommon vertical line so that rod 27 tracks properly from the firstsheave to the next after bending downwardly around the former as shownin Figure 3.

A third sheave 30 is journaled on a stub shaft 31 fixed in wall portion17 normal thereto at a level between those of shafts 26 and 29. Thearrangement and construction are such that the grooves of sheaves 28 and30 are substantially tangent at their adjacent sides to a commonvertical line. Thus wire rod tracks properly from the second sheave tothe third after bending around the former.

Housing 11 is completed by a door 32 hinged to end 13. The door isnormally held closed by a latch 33 pivoted to the bent edge 17a ofside-wall portion 17, but may be opened to give access to the sheavesfor ease in threading the rod therearound initially. A cut-out 34 in thetop of the free edge of the door and the adjacent side wall portionpermits the wire rod to be pulled straight from the top of sheave 30 byany suitable drawing means (not shown). The line along which the rod ispulled out will obviously be at a 45 angle in the horizontal plane withthe line along which the rod enters guides 22 and 23.

It will be evident that rod 27, in being drawn around the sheaves 25, 28and 30 successively, is bent back and forth in several different planes.As a result, the scale adhering thereto is thoroughly broken up andeffectively detached and falls into collecting box 20. Thus the rodleaving the apparatus will be clean and scale-free, ready for drawing,coating or other processing as desired. A sloping deflector plate 35extending along the side 14 guides any scale particles falling thereoninto the box. When the box is full, it is manually removed for disposalof the collected scale and replaced by an empty box.

It will be apparent that the device of our invention is characterized byextreme structural simplicity so that it can readily be manufactured atlow cost. It nevertheless performs its intended function efiectively andrequires no attention or maintenance beyond routine lubrication. Itrequires only a small amount of floor space and can thus be installed inexisting plants without necessitating extensive relocation offacilities.

Although we have disclosed herein the preferred'embodiment of ourinvention, we intend to cover as well any change or modification thereinwhich may be made without departing from the spirit and scope of theinvention.

We claim:

1. Apparatus for descaling rod comprising a base plate and a frame platenormal to the base plate, said frame plate including an entry-sheaveportion, a deflectorsheave portion at about a 45 angle to theentry-sheave portion and an exit-sheave portion substantially normal tosaid deflector-sheave portion and extending therefrom back toward theplane of said entry-sheave portion, a sheave journaled on saidentry-sheave portion, a sheave journaled on said deflector-sheaveportion at a level below the first-mentioned sheave, and a sheavejournaled on said exit-sheave portion at a level above saidsecondmentioned sheave, said sheaves being so positioned that wire rodtrained therearound successively tracks accurately from each sheave tothe next, said frame plate also including an end wall at the edge of theentry-sheave portion remote from the deflector-sheave portion, said endwall extending atright angles to tlie 'entry-sh'eave portion, andag'uide' blockmounted on said end Wall,

effective'to direct entering rod onto said first-mentioned" sheave. v

2. Apparatus as defined in claim 1, characterized by a door hinged tosaid end wall extending to the far side of said frame plate and spacedtherefrom to a second end Wall extending angularly from said exit-sheaveportion and located opposite saidfii-st-mentioned end wall, said doorand end wallshaving their lower edge's sp'aced ab'cd/ef 10 the'baseplateto'adinit ascale-collecting box belo'ws'aid sheaves} Iieference's-Cited'a: meme of th i's patenf UNITED STATES .PATENTS Caugherty May 17, 1938Stainer May 4, 1943 Pergnier Dec. 9, 1952 Smart Mar. 1, 1955 Carlson eta1. Jan. 17, 1956 FOREIGN PATENTS Great Britain. 1913

